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Aquascape Aerator Replacement Diaphragm

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  • Replacement diaphragm assemblies for the Generation 2 Aquascape PondAir 2 & 4 Aerators.
  • Simple and quick installation.
  • PondAir 2 has 1 assembly cartridge and the PondAir 4 has 2 cartridges.
  • PondAir 2 Diaphragm Kit has part #: 75003 and PondAir 4 Diaphragm Kit has part #: 75004.

$20.78 - $37.58

Earn rewards worth up to $0.75 with purchase!

Genuine replacement diaphragms for Generation 2 Aquascape PondAir 2 and 4 Aerators. This line of air pumps is one of the most economical aeration systems on the market today. It is common for economy equipment not to have replaceable parts. However, this is not the case with the Aquascape PondAir 2 & 4 Aerators! 
Like most air compressors, prolonged use causes stress on the diaphragm and the pump may require some maintenance to keep its performance in peak condition and to prolong the aerator's life expectancy.

Diaphragm options:

PondAir 2 - Generation 2 (2012-present) item #75003 - 1 assembly cartridge.

PondAir 4 - Generation 2 (2012-present) item #75004 - 2 assembly cartridge.


  • 5
    aquascape aerator replacement diaphragms

    Posted by Stephen Chromik on Jun 12th 2022

    super easy to install, to very little time

  • 5

    Posted by Linda Steele on Apr 25th 2022

    I had searched for replacement parts for my aerator and a couple of options came up. After looking at all I choose Pond and Garden Depot. Best prices, fast shipping. Excellent!!!!! Have already passed on your info to a friend with a pond. I have saved your link for future pond needs.

  • 5
    Works like new

    Posted by Geoff on May 23rd 2020

    So easy to replace and costs half the price of buying a new aerator.

  • 5
    Easy to install - Pump worked like new!

    Posted by JD - Ohio on May 28th 2018

    Was considering buying a new aerator - saw the replacement parts on the Pond and Garden Depot web site, and purchased the parts. Saved about 75% over a new unit. Easy to replace and the unit works like new - +++++

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